Showing content from http://svn.python.org/projects/python/branches/twouters-dictviews-backport/Lib/test/test_xrange.py below:
# Python test set -- built-in functions import test.test_support, unittest import sys import warnings warnings.filterwarnings("ignore", "integer argument expected", DeprecationWarning, "unittest") class XrangeTest(unittest.TestCase): def test_xrange(self): self.assertEqual(list(xrange(3)), [0, 1, 2]) self.assertEqual(list(xrange(1, 5)), [1, 2, 3, 4]) self.assertEqual(list(xrange(0)), []) self.assertEqual(list(xrange(-3)), []) self.assertEqual(list(xrange(1, 10, 3)), [1, 4, 7]) self.assertEqual(list(xrange(5, -5, -3)), [5, 2, -1, -4]) a = 10 b = 100 c = 50 self.assertEqual(list(xrange(a, a+2)), [a, a+1]) self.assertEqual(list(xrange(a+2, a, -1L)), [a+2, a+1]) self.assertEqual(list(xrange(a+4, a, -2)), [a+4, a+2]) seq = list(xrange(a, b, c)) self.assert_(a in seq) self.assert_(b not in seq) self.assertEqual(len(seq), 2) seq = list(xrange(b, a, -c)) self.assert_(b in seq) self.assert_(a not in seq) self.assertEqual(len(seq), 2) seq = list(xrange(-a, -b, -c)) self.assert_(-a in seq) self.assert_(-b not in seq) self.assertEqual(len(seq), 2) self.assertRaises(TypeError, xrange) self.assertRaises(TypeError, xrange, 1, 2, 3, 4) self.assertRaises(ValueError, xrange, 1, 2, 0) self.assertRaises(OverflowError, xrange, 1e100, 1e101, 1e101) self.assertRaises(TypeError, xrange, 0, "spam") self.assertRaises(TypeError, xrange, 0, 42, "spam") self.assertEqual(len(xrange(0, sys.maxint, sys.maxint-1)), 2) self.assertRaises(OverflowError, xrange, -sys.maxint, sys.maxint) self.assertRaises(OverflowError, xrange, 0, 2*sys.maxint) r = xrange(-sys.maxint, sys.maxint, 2) self.assertEqual(len(r), sys.maxint) self.assertRaises(OverflowError, xrange, -sys.maxint-1, sys.maxint, 2) def test_main(): test.test_support.run_unittest(XrangeTest) if __name__ == "__main__": test_main()
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